- Starfire LLC
- Summit Jet Corp
- Sun Air Aviation Inc
- Sundance Helicopter Svc
- Sunrise Aviation Inc
- Sunset Aviation
- Sunset Aviation
- Sunwest Aviation
- Susanville Municipal Airport
- Swift Air
- T-Craft Inc
- Tal Air
- Talon Air Svc Inc
- Tanana Air Svc
- Team Jet
- Telluride Flights LLC
- Threshold Air Charter
- Tibbetts & Tibbetts
- Tikchik Airventures
- TLC Charter Svc
- Tower Aviation Svc LLC
- Trail Ridge Air Inc
- Transnorthern Aviation Inc
- Travelaire Service
- Tucker Aviation
- Tundra Copters
- Twin Peaks Aviation
- UFO Watchtower
- Ukiah Aviation
- V C Jets LLC
- Van Air
- Velocity Air Inc
- Vintage Aircraft
- Volo Aviation
- Warbelow's Air Ventures Inc
- Warbelow's Air Ventures Inc
- Ward Air
- West Coast Flyers Inc
- Western Air
- Western Air Charter
- Western Aviators
- Wiederkehr Air Inc
- Willow Air Svc
- Wind Dancer Aviation Svc Inc
- Windham Aviation Inc
- Wings
- Woodlands Specialists Inc
- World Class Charters Svc
- Wrangell Mountain Air
- Yakutat Coastal Airlines
- Younkin Air Svc
- Yukon Air Svc
- Yukon Aviation
